What's the matter with the pimple on the arm muscle?

Pimples on arm tendons may be caused by lipoma, ganglion cyst, lymphadenopathy, sebaceous cyst or fibroma. They are usually benign lesions and their nature can be determined through palpation and ultrasound examination.

1. Lipoma:

Lipoma is a soft mass formed by abnormal proliferation of subcutaneous fat tissue, which is highly mobile and painless. It is mostly related to genetic factors and metabolic abnormalities. When the diameter is less than 5 cm and there are no symptoms of compression, no special treatment is required, and regular observation is enough. If it affects the appearance or grows rapidly, it can be removed through minimally invasive surgery.

2. Ganglion cyst:

It is common around the wrist or finger joints. Due to the accumulation of synovial fluid in the tendons, a round induration is formed, which feels elastic when pressed. Long-term strain or trauma is the main cause, which can be treated by extrusion, puncture and surgical excision. The recurrence rate is about 30%.

3. Swollen lymph nodes:

Infection or inflammation of the upper limbs may cause reactive hyperplasia of lymph nodes in the armpits or elbows, manifesting as soybean-sized removable indurations that may be accompanied by redness, swelling, heat and pain. Primary lesions such as tonsillitis and mastitis need to be investigated. Most lymph nodes will disappear on their own after the infection is controlled.

4. Sebaceous cyst:

Due to sebum retention due to clogged hair follicles, black openings can be seen on the surface, and tofu-like secretions may be discharged when squeezed. When secondary infection occurs, redness, swelling and pain will occur, and antibiotic treatment is required before surgery to completely remove the cyst wall.

5. Fibroids:

A solid mass formed by connective tissue hyperplasia, with a hard texture and clear borders and slow growth. It is more likely to occur in young adults and is rarely malignant. Surgical resection is recommended when the diameter exceeds 2 cm or affects function.

It is necessary to avoid repeatedly rubbing or squeezing the lump on a daily basis, and observe changes in size and texture. Increasing the intake of vitamin C and high-quality protein can help tissue repair, and moderate stretching of the upper limbs can improve local circulation. If the mass increases rapidly in a short period of time, causes pain or skin ulceration, you should seek medical treatment promptly to rule out the possibility of malignant tumors. When taking a bath, gently clean the affected area with warm water and avoid using irritating bath products.